CN203789989U - Decompression knife for repairing blood necrosis of femoral head - Google Patents
Decompression knife for repairing blood necrosis of femoral head Download PDFInfo
- Publication number
- CN203789989U CN203789989U CN201420109179.XU CN201420109179U CN203789989U CN 203789989 U CN203789989 U CN 203789989U CN 201420109179 U CN201420109179 U CN 201420109179U CN 203789989 U CN203789989 U CN 203789989U
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- Prior art keywords
- decompression
- blade
- knife
- conduit
- knife bar
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- Expired - Lifetime
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- 230000006837 decompression Effects 0.000 title claims abstract description 74
- 239000008280 blood Substances 0.000 title claims abstract description 21
- 210000004369 blood Anatomy 0.000 title claims abstract description 21
- 230000017074 necrotic cell death Effects 0.000 title abstract description 6
- 230000007246 mechanism Effects 0.000 claims abstract description 11
- 230000000694 effects Effects 0.000 claims abstract description 5
- 239000007769 metal material Substances 0.000 claims abstract description 4
- 230000001105 regulatory effect Effects 0.000 claims description 26
- 238000009434 installation Methods 0.000 claims description 13
- 230000006978 adaptation Effects 0.000 claims description 7
- 238000005452 bending Methods 0.000 claims description 6
- 238000006073 displacement reaction Methods 0.000 claims description 3
- 230000001276 controlling effect Effects 0.000 claims description 2
- 230000003902 lesion Effects 0.000 abstract 1
- 230000006872 improvement Effects 0.000 description 6
- 210000000988 bone and bone Anatomy 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 208000010392 Bone Fractures Diseases 0.000 description 3
- 210000000689 upper leg Anatomy 0.000 description 3
- 230000001174 ascending effect Effects 0.000 description 2
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 210000001519 tissue Anatomy 0.000 description 2
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 230000035876 healing Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 231100000915 pathological change Toxicity 0.000 description 1
- 230000036285 pathological change Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000007790 scraping Methods 0.000 description 1
- 230000001225 therapeutic effect Effects 0.000 description 1
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- Surgical Instruments (AREA)
Abstract
The utility model discloses a decompression knife for repairing blood necrosis of the femoral head. The decompression knife comprises a decompression blade and a drive mechanism, wherein the decompression blade is used for repairing blood necrosis of the femoral head, and the drive mechanism is used for controlling the decompression blade. The decompression knife further comprises a catheter and a knife bar. The decompression blade is composed of a knife edge part, a bent part and a knife body part. The bent part is made of memory metal materials and is connected between the knife edge part and the knife body part. The knife body part is fixedly connected to the head end of the knife rod, so that the cutting edge of the knife edge part faces the radial direction of the knife rod. The knife rod is installed in a cavity of the catheter in a fit and sleeved mode, the knife rod can move in the catheter front and back under the action of the drive mechanism and drive the knife edge part to extend out of the cavity of the catheter by the corresponding extending length, then the bent part is stressed and bent, and accordingly the knife edge part forms a corresponding cutting angle relative to the catheter. By the decompression knife, an eliminating operation can be carried out on internal lesions of the femoral head, and the decompression knife has the advantages of being good in cutting effect and high in safety.
Description
Technical field
This utility model relates to the downright bad fix tool of a kind of femoral head blood, specifically a kind of for the downright bad decompression cutter of repairing of femoral head blood.
Background technology
The necrosis of femoral head blood is a kind of common frdquently encountered disease, mainly at Chinese middle-aged adults, brings misery to patient, walking disorder.The crescent cutter adopting in operative treatment at present, exists some defects, as: blade and cutting object are in 90 °, are scraping instead of cutting, and when hands is twisted, cutting resistance is large, easily tired; Blade opens limited, have excision less than place, or excessively excision, has namely excised the healthy osseous tissue removed of not needing, and returns sword and is blocked by broken bone sometimes, and receive not return.
Utility model content
Technical problem to be solved in the utility model is: provide a kind of for the downright bad decompression cutter of repairing of femoral head blood, have weak effect, use unsafe problem to overcome decompression cutter of the prior art.
Solve the problems of the technologies described above, the technical scheme that this utility model adopts is as follows:
For the downright bad decompression cutter of repairing of femoral head blood, comprise for carrying out the downright bad decompression blade of repairing of femoral head blood and for manipulating the driving mechanism of described decompression blade, it is characterized in that: described decompression cutter also comprises conduit and knife bar, described decompression blade is by blade part, kink and blade portion form, described kink is made and is connected to by memory metal material between blade part and blade portion, blade portion is fixedly connected on the head end of described knife bar, make the cutting edge of blade part towards the radial direction of knife bar, described knife bar adaptation is sleeved in the tube chamber of conduit, it can move forward and backward under the effect of described driving mechanism in conduit, and drive described blade part to stretch out with corresponding overhang outside the tube chamber of conduit, and make the stressed bending of described kink, thereby described blade part forms corresponding cutting angle with respect to conduit.
As a kind of improvement of the present utility model, described blade part is annular blade, the upper end of this annular blade is flat and be connected with described kink, and the bottom of annular blade is curved and arrange dorsad and all towards two cutting edges of the radial direction of knife bar along offering at dual-side.
As a kind of improvement of the present utility model, the head end of described conduit offers the gathering sill arranging vertically, and the bending direction of described kink, towards this gathering sill, is stuck in this gathering sill while making described blade part stretch out tube chamber.
As a kind of improvement of the present utility model, the head end of described knife bar has mounting groove, and described blade portion is inlaid in this mounting groove by Liu Ding and pad.
As preferred implementation of the present utility model, described blade part and blade portion be angle in 90 ° under the not stressed state of kink.
As a kind of improvement of the present utility model, described driving mechanism comprises handle for rotating described decompression blade and for controlling the regulating wheel of described blade part overhang; The middle part of described handle offers installation cavity, described regulating wheel has female central through hole is set, regulating wheel is rotatably installed in described installation cavity, the tail end of described conduit is fixed on handle, the tail end of described knife bar is provided with multiple thread, and it is connected with the central through hole female thread adaptation of described regulating wheel through stretching into after the tube chamber of described conduit in installation cavity.
As a kind of improvement of the present utility model, the multiple thread of described knife bar is provided with the fluting for limiting the displacement of described knife bar in conduit.
As a kind of improvement of the present utility model, described regulating wheel has the screwed hole that is communicated with described installation cavity, and described driving mechanism also comprises the guide finger that adapts to this screwed hole, and guide finger is movably connected in screwed hole, and it can compress and lock described regulating wheel.
As preferred implementation of the present utility model, the width of described decompression blade is that 3～8mm, thickness are 0.5～1.2mm, the external diameter diameter of described conduit is that 8～12mm, internal diameter are that 6～8mm, length are 200～280mm, and the length of the gathering sill of described conduit is that 2～8mm, width are 3.1～8.1mm.
As preferred implementation of the present utility model, the blade part blade angle of described decompression blade is 30 °.
Compared with prior art, the utlity model has following beneficial effect:
The first, the blade of this utility model decompression cutter is consistent with cutting direction, keen edge, and in operation cutting, resistance is little, and easy and flexible, saves time than old product is laborsaving, reduces labor intensity, and it is handy to use;
The second, decompression cutter of the present utility model is realized the control to decompression blade by handle and regulating wheel, and it is simple to operate, uses flexibly, reliable, and when operation, doctor uses comfortablely, and operation easily, can be shortened operating time;
The 3rd, decompression blade of the present utility model can led in-pipe freely, and the bone of avoiding being mixed blocks;
The 4th, catheter head gathering sill of the present utility model can finely play the discrepancy guiding of decompression blade, also protects and accuracy, the stability of cutter in the time of operation cutting of having strengthened reducing pressure simultaneously;
The 5th, the elongated slot of opening on catheter tail multiple thread of the present utility model, has played the effect of spacing knife bar contract by distance, the fine safe control decompression blade scope of application;
The 6th, handle profile aesthetic feeling of the present utility model, moulding meets human engineering, uses comfortable feel, and stress balance is stable, and firmly intensity is good;
In sum, this utility model can be removed operation for femoral head inside diseased region, and it is the desirable Wicresoft of a efficient novelty instrument of the downright bad prosthesis first-selection of femoral head blood.Use this Wicresoft's instrument, have wound little, suture needle is few, and healing is fast, and doctor can easily give desirable therapeutic effect of patient.The function of this product excellence and convenient operation easily, obtain doctor and expert's praise and accreditation, also brings the Gospel of early recovery to patient.Market prospect is very wide.
Brief description of the drawings
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail:
Fig. 1 is axonometric chart of the present utility model;
Fig. 2 is the explosive view of Fig. 1;
Fig. 3 is the structural representation of conduit 2 in this utility model;
Fig. 4-1 is that in this utility model, blade part forms the schematic diagram of three kinds of cutting angles with respect to conduit to 4-3;
Fig. 5 is the schematic diagram that gets the hang of while using decompression cutter of the present utility model to enter the femoral head of boring;
Fig. 6 is the cutting state schematic diagram while using decompression cutter of the present utility model to carry out the downright bad prosthesis of femoral head blood;
Fig. 7 uses decompression cutter of the present utility model to complete the exit status schematic diagram after the downright bad prosthesis of femoral head blood.
Detailed description of the invention
As shown in Fig. 1 to 7, this utility model comprises decompression blade 1, conduit 2, Liu Ding 3, pad 4, knife bar 5, handle 6, guide finger 7 and regulating wheel 8 for the downright bad decompression cutter of repairing of femoral head blood.
Decompression blade 1 is made up of blade part 1a, kink 1b and the 1c of blade portion, kink 1b is made and is connected to by memory metal material between blade part 1a and the 1c of blade portion, blade part 1a is annular blade, the upper end of this annular blade is flat and be connected with kink 1b, the bottom of annular blade is curved and arrange dorsad and all towards two cutting edges of the radial direction of knife bar 5 along offering at dual-side, and blade part 1a and the 1c of blade portion be angle in 90 ° under the not stressed state of kink 1b.The head end of knife bar 5 has mounting groove 5a, and the 1c of blade portion of decompression blade 1 is inlaid in this mounting groove 5a by Liu Ding 3 and pad 4, and the tail end of knife bar 5 is provided with multiple thread 5b.
The middle part of handle 6 offers installation cavity 6a, and regulating wheel 8 has the central through hole that is provided with female thread 8a, and it is rotatably installed in installation cavity 6a; The head end of conduit 2 offers the gathering sill 2a, the tail end that arrange vertically and is fixed on handle 6 and is communicated with installation cavity 6a.Knife bar 5 adaptations are sleeved in the tube chamber of conduit 2, the multiple thread 5b of its tail end stretches in installation cavity 6a and is connected with the central through hole female thread 8a adaptation of regulating wheel 8, under the rotation of regulating wheel 8 regulates, knife bar 5 can move forward and backward in conduit 2, and drive blade part 1a to stretch out with corresponding overhang outside the tube chamber of conduit 2, and make the stressed bending of kink 1b, thereby blade part 1a forms corresponding cutting angle with respect to conduit 2, and the bending direction of kink 1b, towards the gathering sill 2a of conduit 2, is stuck in while making blade part 1a stretch out tube chamber in this gathering sill 2a.
In addition, on above-mentioned multiple thread 5b, be also provided with the fluting for limiting the displacement of knife bar 5 in conduit 2.
Regulating wheel 8 has the screwed hole 6b that is communicated with installation cavity 6a, and guide finger 7 is assigned in this screwed hole 6b, and it is movably connected in screwed hole 6b, forms after suitable cutting angle with respect to conduit 2 at blade part 1a, and it can compress and lock adjustment wheel 8.
While utilizing decompression cutter of the present utility model to carry out the downright bad prosthesis of femoral head blood,
Doctor can hold handle 6 one end, and the decompression blade 7 of knife bar 5 ends, by the hole of boring on femur, is extend into the inner diseased region of femoral head, easily removes accurately, flexibly the tissue of pathological changes blood necrosis.In operation, by precession regulating wheel 8, decompression blade 1 is stretched out to ascending adjusting of overhang outside conduit 2, until blade part 1a forms after suitable cutting angle with respect to conduit 2, then by rotary handle, machinable low-angle is to circumferential area; Add push/pull handle by rotation, region before and after machinable, subtracts downright bad diseased region to multidirectional asymmetric, can excise any one blood slough in femoral head completely.Complete after the tissue of removing blood necrosis, move back regulating wheel by revolving, regain again in conduit with elastic memory decompression cutter, in femur, take out smoothly, and can not cause trouble because broken bone blocks decompression blade cannot take out.
Provide the preferred structure size of this utility model decompression cutter below, and the functional characteristics of the each parts of decompression cutter made an explanation:
Decompression blade 1 preferable width of the present utility model is 3～8mm, thickness is 0.5～1.2mm, adopt special alloy material, the blade angle of blade part 1a is preferably 30 °, sharpening is sharp durable, and there is fine elastic memory shape, by precession regulating wheel, decompression cutter stretches out expansion, length can be ascending gradually, cutting spatial dimension is at 10～45mm, can positive and negative/fore-and-aft direction rotary cutting, from cutting low-angle to circumferential area, in operation working angles, blade remains consistent with cutting direction, resistance is little, cutting easy and flexible, deduct downright bad diseased region to multidirectional asymmetric, can excise any one blood slough in femoral head completely.Move back regulating wheel by revolving, elastic decompression blade is regained again in conduit, takes out smoothly, and can decompression blade not blocked and cannot be taken out because of broken bone in femur.
The preferred external diameter diameter of conduit 2 of the present utility model is that 8～12mm, internal diameter are that 6～8mm, length are 200～280mm, so that the position of going deep into needing in bone.Minimum space and the requirement of strength of demand when suitable inside/outside footpath meets operation.Accurate endoporus, moves freely inner cutter and knife bar, avoids bone to mix and blocks.
The gathering sill 2a preferred length of offering on conduit 2 is that 2～8mm, width are 3.1～8.1mm; it has proper fit with decompression cutter; the fine discrepancy guiding that plays decompression cutter is also protected and accuracy, directionality, the stability of cutter in the time of operation cutting of having strengthened reducing pressure simultaneously.Catheter head gathering sill, decompression cutter, in the time accepting two-way torsion cutwork, plays very pivotal role.
Rivet 3 of the present utility model is for decompression blade 1 is positioned to knife bar 5 reliably, and 4, pad can protect decompression blade 1 in the situation that being subject to deformation force, and the surface that reduces the tool setting of rivet cap produces large pressure and wearing and tearing.
Knife bar 5 of the present utility model, its head of a. has adaptation that the gathering sill of decompression blade location is installed, and gathering sill also plays to decompression blade and is transmitting and cutting two-way torsion used, and the hole in groove is used for and rivet 3 fixed decompression blades.Meticulous external diameter moves freely knife bar with coordinating of guide pipe inner hole.B. the multiple thread of afterbody, under adjusting nut rotation, moves back and forth knife bar in conduit, orders about decompression blade and stretches out accurately and regain smoothly conduit.C. the elongated slot of opening on the nut of afterbody, well controls decompression blade and prolongs axial-movement, and play spacing knife bar contract by distance in the scope of application.
Handle 6 of the present utility model, appearance and modeling aesthetic feeling, meets human engineering, uses comfortable feel, and stress balance is stable, and firmly intensity is good.
Guide finger 7 of the present utility model, in knife bar forward/backward, prevents knife bar rotation, moving-limiting scope.
Regulating wheel 8 of the present utility model, rotation regulating wheel, by the nut at center, promotes knife bar and moves, and changes direction of rotation, can make knife bar forward/backward.Can rotate the size of regulating wheel angle, the overhang of control/positioning blade, realizes accurate excision amount.By rotation regulating wheel, can easily realize the work of stretching out of decompression cutter, regain and take out.
This utility model does not limit to and above-mentioned detailed description of the invention; according to foregoing; according to ordinary skill knowledge and the customary means of this area; do not departing under the above-mentioned basic fundamental thought of this utility model prerequisite; this utility model can also be made equivalent modifications, replacement or the change of other various ways, all drops among protection domain of the present utility model.
Claims (10)
1. the decompression cutter for the downright bad reparation of femoral head blood, comprise for carrying out the downright bad decompression blade (1) of repairing of femoral head blood and for manipulating the driving mechanism of described decompression blade (1), it is characterized in that: described decompression cutter also comprises conduit (2) and knife bar (5), described decompression blade (1) is by blade part (1a), kink (1b) and blade portion (1c) form, described kink (1b) is made and is connected to by memory metal material between blade part (1a) and blade portion (1c), blade portion (1c) is fixedly connected on the head end of described knife bar (5), make the cutting edge of blade part (1a) towards the radial direction of knife bar (5), described knife bar (5) adaptation is sleeved in the tube chamber of conduit (2), it can move forward and backward under the effect of described driving mechanism in conduit (2), and drive described blade part (1a) to stretch out with corresponding overhang outside the tube chamber of conduit (2), and make the stressed bending of described kink (1b), thereby described blade part (1a) forms corresponding cutting angle with respect to conduit (2).
2. decompression cutter according to claim 1, it is characterized in that: described blade part (1a) is annular blade, the upper end of this annular blade is flat and be connected with described kink (1b), and the bottom of annular blade is curved and arrange dorsad and all towards two cutting edges of the radial direction of knife bar (5) along offering at dual-side.
3. decompression cutter according to claim 2, it is characterized in that: the head end of described conduit (2) offers the gathering sill (2a) arranging vertically, the bending direction of described kink (1b), towards this gathering sill (2a), is stuck in this gathering sill (2a) while making described blade part (1a) stretch out tube chamber.
4. decompression cutter according to claim 3, is characterized in that: the head end of described knife bar (5) has mounting groove (5a), and described blade portion (1c) is inlaid in this mounting groove (5a) by Liu Ding (3) and pad (4).
5. according to the decompression cutter described in claim 1 to 4 any one, it is characterized in that: described blade part (1a) and blade portion (1c) be angle in 90 ° under the not stressed state of kink (1b).
6. according to the decompression cutter described in claim 1 to 4 any one, it is characterized in that: described driving mechanism comprises handle (6) for rotating described decompression blade (1) and for controlling the regulating wheel (8) of described blade part (1a) overhang; The middle part of described handle (6) offers installation cavity (6a), described regulating wheel (8) has the central through hole that is provided with female thread (8a), regulating wheel (8) is rotatably installed in described installation cavity (6a), the tail end of described conduit (2) is fixed on handle (6), the tail end of described knife bar (5) is provided with multiple thread (5b), and it is connected with central through hole female thread (8a) adaptation of described regulating wheel (8) through stretching into after the tube chamber of described conduit (2) in installation cavity (6a).
7. decompression cutter according to claim 6, is characterized in that: the multiple thread (5b) of described knife bar (5) is provided with the fluting for limiting the displacement of described knife bar (5) in conduit (2).
8. decompression cutter according to claim 7, it is characterized in that: described regulating wheel (8) has the screwed hole (6b) that is communicated with described installation cavity (6a), described driving mechanism also comprises the guide finger (7) that adapts to this screwed hole (6b), guide finger (7) is movably connected in screwed hole (6b), and it can compress and lock described regulating wheel (8).
9. decompression cutter according to claim 8, it is characterized in that: the width of described decompression blade (1) is that 3～8mm, thickness are 0.5～1.2mm, the external diameter diameter of described conduit (2) is that 8～12mm, internal diameter are that 6～8mm, length are 200～280mm, and the length of the gathering sill (2a) of described conduit (2) is that 2～8mm, width are 3.1～8.1mm.
10. decompression cutter according to claim 9, is characterized in that: blade part (1a) blade angle of described decompression blade (1) is 30 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420109179.XU CN203789989U (en) | 2014-03-11 | 2014-03-11 | Decompression knife for repairing blood necrosis of femoral head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420109179.XU CN203789989U (en) | 2014-03-11 | 2014-03-11 | Decompression knife for repairing blood necrosis of femoral head |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203789989U true CN203789989U (en) | 2014-08-27 |
Family
ID=51372271
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420109179.XU Expired - Lifetime CN203789989U (en) | 2014-03-11 | 2014-03-11 | Decompression knife for repairing blood necrosis of femoral head |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203789989U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109717908A (en) * | 2017-10-27 | 2019-05-07 | 葛爱敏 | Three row's pathological material-drawing knifes |
| CN113729851A (en) * | 2021-05-17 | 2021-12-03 | 广州博鑫医疗技术有限公司 | Thrombus excision device |
-
2014
- 2014-03-11 CN CN201420109179.XU patent/CN203789989U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109717908A (en) * | 2017-10-27 | 2019-05-07 | 葛爱敏 | Three row's pathological material-drawing knifes |
| CN109717908B (en) * | 2017-10-27 | 2023-08-18 | 葛爱敏 | Three-row pathological sampling knife |
| CN113729851A (en) * | 2021-05-17 | 2021-12-03 | 广州博鑫医疗技术有限公司 | Thrombus excision device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140827 |
|
| CX01 | Expiry of patent term |